Opinion paper
High energy storage density and power density achieved simultaneously in NaNbO3-based lead-free ceramics via antiferroelectricity enhancement

https://doi.org/10.1016/j.jmat.2020.11.016Get rights and content
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Highlights

  • Achieving ultrahigh Urec of 5.00 J/cm3 and PD of 100.5 MW/cm3 in 0.10BNS ceramics.

  • An excellent stability has been achieved in 0.10BNS ceramics.

  • An ultrashort t0.9 of 46.5 ns was achieved in 0.10BNS ceramics.

Abstract

High-performance lead-free dielectric ceramics with simultaneously high energy storage density and power density are in high demanded for pulse power systems. To realize excellent energy-storage characteristics, a strategy to enhance antiferroelectricity and construct a local random field simultaneously was proposed in this study. Based on the above strategy, a series of (1-x)NaNbO3-xBi(Ni1/2Sn1/2)O3 [xBNS, x = 0.05, 0.10, 0.15, 0.20, and 0.22] solid solutions were designed and fabricated. An ultrahigh energy storage density (Utotal) of 7.35 J/cm3, and recoverable energy density (Urec) of 5.00 J/cm3 were achieved in the 0.10BNS ceramics. In addition, an adequate stability of energy storage properties at a range of temperatures (20–140 °C), frequencies (1–100 Hz), and fatigue test durations (1–104 cycles) were realized in 0.10BNS ceramics. 0.10BNS ceramics displayed a high current density of 1005 A/cm2, an ultrahigh power density of 100.5 MW/cm3, and an ultrashort discharge time of 46.5 ns? This remarkable performance not only justified our strategy but also confirmed 0.10BNS ceramics as a promising candidate for energy storage.

Keywords

Lead-free ceramics
Energy storage
NaNbO3-Based
Power density

Cited by (0)

Ms. Xiaoyan Dong received her bachelor degree in School of Materials Science and Engineering from Guilin University of Technology in 2019. She is currently working on her master degree at School of Materials Science and Engineering from Guilin University of Technology. Her research focuses on lead-free dielectric ceramic materials for using in energy storage applications.

Dr. Xiuli Chen is a Professor at Guilin University of Technology. She received her PhD degree in School of Materials Science and Engineering from Northwestern Polytechnical University in 2009. Her work focused on designing novel high-performance lead-free dielectric ceramic materials and their application for energy storage/piezoelectric sensor, and finding the correlations between the microstructure (such as crystal structure, domain wall, defect, etc.) and physical performance.

Dr. Huanfu Zhou is a Professor of Guilin University of Technology, and also vice director of the discipline construction office of Guilin University of Technology. He received his PhD degree in School of Electronic and Information Engineering from Xi’an Jiaotong University in 2009. He is the standing committee member and standing vice secretary general of Professional Committee for Key Materials and Technologies of Chinese Electronic Components. His work focused on the research of information functional materials and devices.

Peer review under responsibility of The Chinese Ceramic Society.